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H. A. HBMPEL. Q Prilzlter's. Looking-Up Devicef Patented April 27, 1880.

N-PETERS, PHoTO-QTNOGRAPMER, wA-SMINGTON. nv C.

NITED, STATES Armar OFFICE.

HENRY A. HEMPEL, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF OF t HIS RIGHT TO JOSEPH A. DINGENS, OF SAME PLACE.

PRINTERS LOCKING-UP DEVICE.

SPECIFICATION forming part of Letters Patent No. 227,004, dated April 27, 1880.

Application led February 7, 1880.

To all whom it may concern Be it known that I, HENRY A. HEMPEL, of the city of Buffalo, in the county of Erie, in the State of New York, have invented a new and useful Improvement in Printers Locking Up Devices, of which the following is a specication, reference being had to the accompanying drawings. l

This invention relates to printers lockingro up devices for securing forms in proper position on the beds of printing-presses, and may be adapted to the locking up of type in chases.

The object of my invention is the construction of a simple adjustable locking-up device which can be conveniently handled and which is readily adjusted to any desired width.

My invention consists of an adjustable locking-up device composed of two parallel end bars connected with a central bar by suitable 2o links, and provided with a locking mechanism whereby the parallel end bars are secured at any desired distance from each other; also, of the peculiar construction of the locking mechanism, as will be hereinafter fully set In the accompanying drawings, Figure l is a plan view of my improved adjustable locking-up device in an extended position. Fig..

2 is a similar view-of the locking-up device 3o contracted. Fig. 3 is a section in line a: x,

Fig. l. Fig. 4 is a detached view, on an enlarged scale, of the locking mechanism.

Like letters of reference refer to like parts in the several iigures.

3 5 A A represent two straight parallel end bars made of the proper width and length in accordance with the size of the chase or press in which the locking-up device is designed to be used. B is the central bar, arranged paral- 4o lel with the end bars, A, and having its ends connected with the ends of the end bars, A, by two pairs of pivoted links, C C. The links O' are arranged so as to form a salient angle, and the links C are arranged parallel thereg with, forming a re-entering angle.

D are two links pivoted to the ends of the end bars7 A A', at the point-s where the links C are pivoted thereto, and having their inner endspivoted together at e, the links D being 5o f the same length as the links C', and the upper link D arranged parallel with the lower link C' and the lower link D parallel with the upper link O', so that the four links O( D form an adjustable parallelogram.

The pivot e, connecting the inner ends of thelinks D, passes loosely through a lon gitudinal slot, f, formed in the central bar, B, so that it freely slides therein when the outer bars, A A, are opened or closed.

g is a ratchet bar or rack formed on the bar 6o B, on one side of the slot j', and h is a pawl hung on the pivot c, and held in engagement with the teeth r/ by a spring, i, bearin g against a plain shoulder, 7c, formed on the opposite side of the slot f. The spring t' is preferably made comparatively short, as shown, so that the spring will press the pawl h against the teeth g only when the free end ofthe pawl is placed between the central line of the slot f and the teeth g, while 7o when the pawl h is swung past the central line of the slot the free end of the pawl will be held against the plain shoulder 7c of the bar B. The pawl h is provided With a projecting knob, Z, for taking hold of it.

When the locking-up device is contracted or reduced to its smallest compass, the bars A A and B lie in close contact, as shown in Fig. 2. Upon taking hold of the outer bars, A A, the latter can be easily separated, when the pivot 8o e of the links D slides through the slot f, and the pawl h rides over the teeth g until the separating motion of the bars A is stopped, when the pawl h is thrown in engagement with the teeth g by the spring t', therebypreventing the 85 bars A from closing under pressure. I n this manner the bars A are readily adjusted and secured at any desired distance from each other to correspond with the space desired to be .illed in the chase or press-bed, the opera- 9o tion of adjusting and securing the bars being effected very rapidly and withV very little effort on the part of the operator. Upon releasing the pawl h the bars A A can be closed by a slight pressure of the hand.

My improved locking-up device will sustain any pressure which can bebrought to bear upon the same in the chase or press-bed, and it affords a ready and convenient means for filling up spaces which are now frequently 1o@ filled very inoonveniently with a number of A A, of the central bar, B, provided With slot 1o pieces of Wooden furniture. f, ratchet-teeth g, links G C', connecting the I claim as my inventionbars A AB, pivote, and the links D, provided l. The combination, with the parallel bars Witha spring-pawl,h, substantially as set forth. 5 A A, of the central bar, B, connected there- With by links C C and D and pivot e, and provided with a suitable fastening device, substantially as set forth.

2. The combination, With the parallel bars HENRY A. HEMPEL.

Witnesses JN0. J. BONNER, J. A. DINGENs. 

